Siemens | HGB1K045B | Circuit Breaker | 45A | 1-Pole | 347V

The Siemens HGB1K045B circuit breaker delivers dependable, precise protection for 347V electrical systems in a compact, 1-pole design. Built for maintenance, retrofit, and replacement projects, this part is tailored to environments where exact specifications matter and downtime needs to be minimized.

• Amperage: 45 A
• Poles: 1-Pole
• Voltage rating: 347 V
• Part number: HGB1K045B

Why the HGB1K045B stands out for your panel:

• Exact compatibility reference: The part number HGB1K045B is the best reference for matching your panel’s requirements, helping ensure proper fit and electrical characteristics.
• Efficient replacements: A straightforward, drop-in option for maintenance and replacement, designed to minimize panel downtime.
• Retrofit-ready: Supports modernization efforts without extensive rewiring or redesign, preserving existing wiring and enclosure configurations where possible.
• Designed for 347V systems: Specifically rated for circuits operating at 347 volts, making it suitable for certain commercial and industrial installations.

Practical use scenarios

• Replacing a failed 45 A, 1-pole breaker in a Siemens or compatible distribution panel to restore protection quickly.
• Upgrading legacy panels to align with current electrical protection standards during routine maintenance or code-driven improvements.
• Implementing a targeted protection upgrade for a dedicated 347V circuit without altering other feeder protections.

Important: Confirm fit and ratings before ordering. The HGB1K045B part number is the most reliable reference for compatibility with your specific panel model and system voltage.